99207929399040 has 720 divisors, whose sum is σ = 442577631767040. Its totient is φ = 20614633021440.

The previous prime is 99207929399021. The next prime is 99207929399069. The reversal of 99207929399040 is 4099392970299.

99207929399040 is a `hidden beast` number, since 9 + 9 + 207 + 9 + 29 + 399 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 99207929399040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1769941 + ... + 14196779.

It is an arithmetic number, because the mean of its divisors is an integer number (614691155232).

Almost surely, 2^{99207929399040} is an apocalyptic number.

99207929399040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99207929399040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221288815883520).

99207929399040 is an abundant number, since it is smaller than the sum of its proper divisors (343369702368000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99207929399040 is a wasteful number, since it uses less digits than its factorization.

99207929399040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426890 (or 12426867 counting only the distinct ones).

The product of its (nonzero) digits is 178564176, while the sum is 72.

The spelling of 99207929399040 in words is "ninety-nine trillion, two hundred seven billion, nine hundred twenty-nine million, three hundred ninety-nine thousand, forty".